<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div>
  <input type="text" v-model="user.username" placeholder="请输入用户名">
  <input type="password" v-model="user.password" placeholder="请输入用密码">
  <input type="button" value="登录" @click="login()">
</div>

<script src="js/vue.js"></script>
<script src="js/axios.min.js"></script>
<script>
    let v = new Vue({
        el:"div",
        data:{
            user:{
                username:"",
                password:"",
            }
        },
        methods:{
            login(){
                axios.post("/login",v.user).then(function (response){
                    if (response.data==1){
                        alert("登陆成功!")
                        location.href="/";
                        return;
                    }else if (response.data==2){
                        alert("您输入的密码有误!")
                        v.user.username="";
                        v.user.password="";
                        return;
                    }
                    alert("该用户不存在!")
                    v.user.username="";
                    v.user.password="";
                })
            }
        }
    })
</script>

</body>
</html>